1926-1984 Vintage Models - S&S Cycle

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S e ction 5:S&S ®Parts forTwin Cam 96 /103 2007-2012Parts forTwin Cam 88 ®1999-20061926-1984 Vintage ModelsCamshaftsFor 1948-’84 Big Twins With Stock Valve TrainThese camshafts are designed for performance upgrades in pan and shovel engineswith stock valve train — stock style tappets, pushrods and rocker arms. It isimportant to differentiate these cams from cams for use with the S&S Hydraulic ValveTrain Update Kit, Retro Conversion Kit, or Replacement Cylinder Head Kit For Pans,which use 1984-’99 style cams. These cams are all high lift, with the exception of the450S, and require high lift valve springs and clearance checks for installation.Parts forEvolution ®1984-1999Parts forSportster ® & Buell ®1986-2012Parts forVintage Engines1926-1984Parts forX-Wedge®2007-2012Parts forVictory®, Off-road& MetricPERFORMANCEPARTSFitment• 1948-’69 engines with generator style crankcases• 1970-’84 engines with alternator style crankcases• Early SH-Series engines with stock style valve trainApplications450S Cam: A bolt-in hydraulic cam for 74" and 80" shovelhead engines 1966-’79and 1983-’84. (Can be used in 1981-’82 models if cylinder heads are updatedto late style valve guides.) The 450S can also be used as a low end torque camin modified shovelhead engines up to 88" with compression ratios of up to 8.5:1.Although designed for use with hydraulic tappets, the S&S 450S can be used withsolid lifters. Use with solids will result in more valve train noise, slightly highercylinder pressure, and slightly more torque. 1500-4500 rpm. (see dyno chart)514 Cam: For 84" to 93" strokers with no greater than 9:1 CR – best gains occur inthe mid range from 2500 to 5000 rpm where most riding is done. Relatively quietand easier on the valve train than most other cams with lifts as high. Solid liftersor aftermarket hydraulic tappets are recommended, valve spring spacing and othernormal clearancing checks required. 2500-5000 rpm.33-5050560S Cam : For 88" to 103" engines between 9:1 to 10:1 CR – Excellent poweracross the rpm range. Not recommended for stock displacement or lower compressionengines. Requires high lift valve springs and normal clearance checks. Solid lifters only.3500-6000 rpm.565S Cam: The 565S cam for big inch, high compression shovelhead engines is justthe ticket for big, bad engines like our 98" and 103" Sidewinder® Kits (see dyno charton next page). 10:1 to 12:1 compression required. The long duration of this cammakes good top end horsepower. Solid lifters only. 3500-6500 rpm.S&S can do a special order cam, please contact your S&S customer servicerepresentative for more informationDealer Services& Promo ItemsWarranty &Company PolicyOEM Cross ReferenceAppendix & IndexTools & ShopSuppliesRacingProductsThe 450S is a great bolt-in street cam for 74" and 80" shovelhead engines. Thisdyno chart compares the S&S 450S to one of the all time favorites, the Andrews®A grind cam in an 80" shovelhead. Note that the maximum horsepower is almostidentical, but the S&S 450S yields about 5 ft/lb more midrange torque.5-30Order toll free 866-244-2673
1926-1984 Vintage ModelsContinued –S&S® Camshafts for 1948-'84 Big Twins with Stock Valve TrainParts forTwin Cam 96 /103 2007-2012This dyno chart shows a 103" S&S SH103 engine, with an S&S Super D carb and 2" dragpipes, and the 565S cam. Notice that there is good torque and horsepower across the entirerpm range, especially in the all important mid range. The dip in torque from 3000 to 4000rpm is typical of the exhaust system used in this test.Parts forTwin Cam 88 ®1999-2006Parts forEvolution ®1984-1999Parts forSportster ® & Buell ®1986-2012Parts forVintage Engines1926-1984PERFORMANCEPARTS33-5195Cam Specifications For 1948-’84 big twin enginesS&S can do a special order cam, please contact your S&S customer servicerepresentative for more informationParts forX-Wedge®2007-2012Parts forVictory®, Off-road& MetricCamNameS&S450SS&S514S&S560SS&S565SApplicationEngines up to88" with up to8.5:1 CR.Good low andmid range torque.80" to 96"engines with 8:1to 9:1 CR.Good mid range.88" to 103"engines w/9:1to 10.1:1 CR.Strong power.98" to 103"engines w/10:1to 12:1 CR.Strong power.ModelYearCamPart No.1948-'69 33-50621970-'77 33-50631978-'84 33-50641948-'69 33-50501970-'77 33-50511978-'84 33-50521948-'69 33-50591970-'77 33-50601978-'84 33-50611948-'69 33-51931970-'77 33-51941978-'84 33-5195Valve Timing1 Open/CloseIntakeExhaustOpen BTDC/Close ABDC Open BBDC/Close ATDC18°/38° 40°/18° 236° 238°23°/43° 43°/23° 246° 246°Valve DurationLift @ TDC3 SpringValve Lift 2 SpacingIntake Exhaust Intake Exhaust Required.475" Pan.453"Shovel.540" Pan.514"Shovel20°/55° 60°/20° 255° 260° .560" Pan25°/60° 65°/25° 265° 270° .565" Pan.158"Pan.151"Shovel.177"Pan.169"Shovel.176"Pan.195"Pan.152" Pan.145"Shovel.177" Pan.169"ShovelNoBolt InYesTappet4TypeRequiredHydraulicorSolidSolid.172" Pan Yes Solid.183" Pan Yes Solid1Timing designation is function of zero lash @ .053" off base circle.2Pan and shovel lifts are determined by rocker arm ratio. Pan ratio is nominally 1.5:1 and shovel ratio is nominally 1.43:1. S&S rocker arms for shovels have 1.5:1 rocker arm ratio, so lift will be the same as pan lift.3TDC lifts are measured at the valve and are for reference only. Overlap valve lifts must be checked on assembled motor.4Cams specified for solid tappets may be used with modern high performance hydraulic tappets for shovelhead engines. Stock hydraulic tappets are not recommended. 1980-'81 engines require conversion to late style valve guidesRacingProductsTools & ShopSuppliesDealer Services& Promo ItemsWarranty &Company PolicyOEM Cross ReferenceAppendix & IndexVisit us at www.sscycle.com5-31
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